Deck 4: Cells and Organelles

Question 1

The size range of most plant and animal cells is .

A)1- 10 nm
B)50- 100 mm
C)1- 5 µm
D)10- 50 µm
E)0.1- 0.5 mm

Answer 1

D

Question 2

Which of the following is NOT believed to be a virus or to be caused by a virus?

A)T4 phage
B)Epstein- Barr
C)AIDS
D)TMV
E)Scrapie

Answer 2

E

Question 3

Intermediate filaments are

A)different in different cell types.
B)composed of tubulin.
C)composed of globular proteins only.
D)smaller than actin filaments.
E)none of the above

Answer 3

A

Question 4

A protein is destined to be secreted from a cell. In which organelle would you expect to find the protein just after it is produced in the rough endoplasmic reticulum?

A)secretory vesicle
B)endosome
C)nucleus
D)lysosome
E)Golgi apparatus

Question 5

Which sequence reflects the locations that a secretory protein will visit on its way from its production to its secretion outside the cell?

A)rough ER, Golgi complex, smooth ER, ER vesicle
B)nucleus, Golgi complex, rough or smooth ER, secretory vesicle
C)rough ER, ER vesicle, Golgi complex, secretory vesicle
D)smooth ER, rough ER, Golgi complex, secretory vesicle
E)rough ER, secretory vesicle, Golgi complex, ER vesicle

Question 6

Which of the following is true of a lysosome?

A)The contents of the lysosome originate in the smooth ER.
B)The lysosome may function in glycosylation.
C)The lysosome may mature from a late endosome.
D)The lysosome functions in export packaging.
E)all of the above

Question 7

Which of the following is included as part of the eubacteria?

A)halobacteria
B)thermacidophiles
C)sulfobacteria
D)methanogens
E)cyanobacteria

Question 8

Glyoxysomes play an important role in the germination of fat- storing seeds and are considered to be specialized _ .

A)vacuoles
B)peroxisomes
C)centrioles
D)ribosomes
E)lysosomes

Question 9

Which of the following processes would be most likely to occur in the Golgi complex?

A)glycosylation of proteins
B)synthesis of steroids
C)detoxification of drugs
D)synthesis of DNA
E)production and packaging of lipids

Question 10

Which of the following is least likely to be part of a cell membrane?

A)enzymes
B)proteoglycans
C)transport proteins
D)glycoproteins
E)phospholipids

Question 11

Which of the following is NOT true of a viroid?

A)Cadang- cadang is a viroid disease of the coconut palm.
B)Viroids affect mostly plants.
C)Its RNA is circular.
D)Its capsid is quite small.
E)Viroids possess about 300- 400 nucleotides.

Question 12

A(n)is composed of tetrameric protofilaments.

A)extracellular matrix
B)microfilament
C)intermediate filament
D)microtubule
E)bacteriophage

Question 13

The cytosol is best described as the

A)three- dimensional array of interconnected filaments.
B)fluid within the nucleus.
C)semifluid substance in which organelles are suspended.
D)area of the cell not occupied by the nucleus.
E)internal contents of organelles.

Question 14

Which of the following is true of plant cells?

A)The plant cell has no cell wall.
B)Only plant cells have a cell membrane.
C)Plant cells may contain chloroplasts.
D)Plant cells are always much larger than animal cells.
E)Chromosomes are found only in plant cells.

Question 15

Which of the following diseases is caused by a prion?

A)infantile Refsum disease
B)Tay- Sachs disease
C)Zellweger's syndrome
D)polio
E)mad cow disease

Question 16

Communication between animal cells is facilitated by

A)gap junctions.
B)tight junctions.
C)plasmodesmata.
D)adhesive junctions.
E)both B and C

Question 17

When the size of a cell increases, the surface area/volume ratio

A)decreases.
B)increases.
C)decreases initially and then begins to increase.
D)increases initially and then begins to decrease.
E)remains the same.

Question 18

The methanobacteria, halobacteria, and sulfobacteria are included in which domain?

A)blue- green algae
B)protista
C)eubacteria
D)archaea
E)all of the above

Question 19

Prokaryotes have S ribosomes with _ _S and S subunits, whereas eukaryotes have _S ribosomes with _S and S subunits.

A)100, 60, 50 . . . 90, 60, 40
B)80, 60, 40 . . . 70, 50, 30
C)80, 50, 30 . . . 100, 60, 40
D)70, 50, 30 . . . 80, 60, 40
E)70, 40, 30 . . . 80, 50, 30

Question 20

Kuru is a degenerative disease of the central nervous system believed to be caused by which type of agent?

A)virus
B)bacterium
C)protozoan
D)viroid
E)prion

Question 21

The smooth endoplasmic reticulum functions in synthesis of

A)DNA.
B)lipids.
C)polysaccharides.
D)proteins.
E)all of the above

Question 22

The pathway that a secretory protein takes from inside to outside is: rough endoplasmic reticulum, , Golgi complex, , outside the cell.

Question 23

The similarity in the evolutionary origins of mitochondria and chloroplasts has led to the development of the that proposed they were originally bacteria.

Question 24

Which of the following fundamental properties of life do viruses NOT possess?

A)metabolism
B)irritability
C)ability to reproduce
D)both A and B
E)both B and C

Question 25

Which of the following is a eukaryotic characteristic?

A)little processing of RNA
B)cell fission
C)70S ribosomes
D)membrane- bound nucleus
E)none of the above

Question 26

The is comprised of the fluid portion of the cell and contains the organelles.

Question 27

Which of the following diseases is caused by a peroxisomal defect?

A)Zellweger syndrome
B)sickle- cell anemia
C)Tay- Sachs disease
D)I- cell disease
E)hypertrophic cardiomyopathy

Question 28

Membrane proteins may function in

A)protein manufacture.
B)temperature control.
C)amphipathic modification.
D)information storage.
E)receiving extracellular signals.

Question 29

Which of the following is NOT generally associated with a chloroplast?

A)matrix
B)thylakoids
C)grana
D)stroma
E)both A and B

Question 30

Lignin is an important component in

A)plant cell walls.
B)tight junctions.
C)plasmodesmata.
D)fungal cell walls.
E)bacterial cell walls.

Question 31

In which of the following properties are the archaea more like eukaryotes than the bacteria?

A)microtubules and microfilaments
B)mode of cell division
C)translation initiation
D)size
E)both C and D

Question 32

Which organelle has only a single membrane around it?

A)nucleus
B)mitochondrion
C)chloroplast
D)peroxisome
E)ribosome

Question 33

Collagen fibers are to the extracellular matrix, as is to the cell wall.

Question 34

Which of the following organelles is NOT generally found in animal cells?

A)endoplasmic reticulum
B)centriole
C)food vacuole
D)mitochondrion
E)central vacuole

Question 35

The major structural elements of the cytoskeleton are

A)microtubules, microfilaments, and intermediate filaments.
B)cleavage furrows and G- actin.
C)the cytoplasm and cytosol.
D)proteoglycans and cellulose microfibrils.
E)the extracellular matrix and the cell wall.

Question 36

Currently there is a great deal of scientific debate about whether or not viruses should be considered living organisms. Pick a side on the debate and defend your position with scientific facts. In your discussion, be sure to include the properties of life and the impact on the taxonomic placement of viroids and prions.

Question 37

Tubulin is to microtubules, as is to microfilaments.